void OGRWarpedLayer::SetSpatialFilter( OGRGeometry * poGeom )
{
OGRLayer::SetSpatialFilter(poGeom);
if( poGeom == NULL || m_poReversedCT == NULL )
{
m_poDecoratedLayer->SetSpatialFilter(NULL);
}
else
{
OGREnvelope sEnvelope;
poGeom->getEnvelope(&sEnvelope);
if( ReprojectEnvelope(&sEnvelope, m_poReversedCT) )
{
m_poDecoratedLayer->SetSpatialFilterRect(sEnvelope.MinX,
sEnvelope.MinY,
sEnvelope.MaxX,
sEnvelope.MaxY);
}
else
{
m_poDecoratedLayer->SetSpatialFilter(NULL);
}
}
}
OGRErr OGRWarpedLayer::GetExtent(int iGeomField, OGREnvelope *psExtent, int bForce)
{
if( iGeomField == m_iGeomField )
{
if( sStaticEnvelope.IsInit() )
{
memcpy(psExtent, &sStaticEnvelope, sizeof(OGREnvelope));
return OGRERR_NONE;
}
OGREnvelope sExtent;
OGRErr eErr = m_poDecoratedLayer->GetExtent(m_iGeomField, &sExtent, bForce);
if( eErr != OGRERR_NONE )
return eErr;
if( ReprojectEnvelope(&sExtent, m_poCT) )
{
memcpy(psExtent, &sExtent, sizeof(OGREnvelope));
return OGRERR_NONE;
}
else
return OGRERR_FAILURE;
}
else
return m_poDecoratedLayer->GetExtent(iGeomField, psExtent, bForce);
}
void OGRWarpedLayer::SetSpatialFilter( int iGeomField, OGRGeometry *poGeom )
{
if( iGeomField < 0 || iGeomField >= GetLayerDefn()->GetGeomFieldCount() )
{
CPLError(CE_Failure, CPLE_AppDefined,
"Invalid geometry field index : %d", iGeomField);
return;
}
m_iGeomFieldFilter = iGeomField;
if( InstallFilter( poGeom ) )
ResetReading();
if( m_iGeomFieldFilter == m_iGeomField )
{
if( poGeom == NULL || m_poReversedCT == NULL )
{
m_poDecoratedLayer->SetSpatialFilter(m_iGeomFieldFilter,
NULL);
}
else
{
OGREnvelope sEnvelope;
poGeom->getEnvelope(&sEnvelope);
if( CPLIsInf(sEnvelope.MinX) && CPLIsInf(sEnvelope.MinY) &&
CPLIsInf(sEnvelope.MaxX) && CPLIsInf(sEnvelope.MaxY) )
{
m_poDecoratedLayer->SetSpatialFilterRect(m_iGeomFieldFilter,
sEnvelope.MinX,
sEnvelope.MinY,
sEnvelope.MaxX,
sEnvelope.MaxY);
}
else if( ReprojectEnvelope(&sEnvelope, m_poReversedCT) )
{
m_poDecoratedLayer->SetSpatialFilterRect(m_iGeomFieldFilter,
sEnvelope.MinX,
sEnvelope.MinY,
sEnvelope.MaxX,
sEnvelope.MaxY);
}
else
{
m_poDecoratedLayer->SetSpatialFilter(m_iGeomFieldFilter,
NULL);
}
}
}
else
{
m_poDecoratedLayer->SetSpatialFilter(m_iGeomFieldFilter,
poGeom);
}
}
